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La Formation des Argiles de Saïda (Jurassique supérieur) dans le domaine tlemcenien oriental (Takhemaret, Algérie) : données biostratigraphiques, ichnologiques et sédimentologiques

Abstract : The study area is located in the outskirt to the Takhemaret village, constituting part of the Saïda Mountains, eastern segment of the tlemcenian domain (northwest Algeria). In this area, the “Argiles de Saïda” Formation is subdivided into three lithostratigraphic units : the lower clay-sandstone unit, the clay-carbonate unit and the upper clay-sandstone unit. They were previously assigned to the Callovian-Oxfordian. However, the newly discovered ammonites assign the “Argiles de Saïda” Formation to the Middle (Transversarium Biozone)-Upper (Bifurcatus Biozone) Oxfordian. Ichnofacies and sedimentary facies analyses indicate a shallow detrital or carbonate platform depositional environment, with combined hydrodynamic influence (tides, swells, strong waves) and exceptional strong currents (gravity currents and storms).
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Amine Cherif, Didier Bert, Miloud Benhamou, Madani Benyoucef. La Formation des Argiles de Saïda (Jurassique supérieur) dans le domaine tlemcenien oriental (Takhemaret, Algérie) : données biostratigraphiques, ichnologiques et sédimentologiques. Revue de Paléobiologie, Museum d'Histoire Naturelle de la Ville de Geneve, 2015, 34 (2), pp.363-384. ⟨10.5281/zenodo.34344⟩. ⟨insu-01242766⟩

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